diff --git a/mlir/include/mlir/IR/CommonTypeConstraints.td b/mlir/include/mlir/IR/CommonTypeConstraints.td
index 211385245555a..f5ed8d8a4b0a6 100644
--- a/mlir/include/mlir/IR/CommonTypeConstraints.td
+++ b/mlir/include/mlir/IR/CommonTypeConstraints.td
@@ -100,7 +100,7 @@ def HasValueSemanticsPred : CPred<"$_self.hasTrait<::mlir::ValueSemantics>()">;
 class Type<Pred condition, string descr = "",
            string cppType = "::mlir::Type"> :
     TypeConstraint<condition, descr, cppType> {
-  string description = "";
+  string description = descr;
   string builderCall = "";
 }